5. A 400 mm diameter shaft is rotating at 200 r.p.m. in a bearing of length 120 mm. If the thickness of oil film is 1.5 mm and the dynamic viscosity of the oil is 0.7 N.S/m2, determine: (i) Torque required to overcome friction in bearing; (ii) Power utilized in overcoming viscous resistance. Assume a linear velocity profile.

Q: A shaft (250 mm diameter) rotates at 250 rpm inside a sleeve (251 mm diameter) with a constant…

A: Given:d=250 mmN=250 rpmdo=251 mmP=2204 WL=150 mmh=do-d2=0.251-0.2502h=0.0005 m

Q: A weight, as shown in figure Q1b-(a) has to move at constant velocity of 2 m/s on an inclined…

A: Given , Weight of the block, W =200 N velocity of the block , V = 2m/s Block width ,b =20 cm…

Q: A 10kg box slides on a ramp with a slope of 30°. There is a thin layer of oil with a N.s viscosity…

A:

Q: A 3d block with the dimensions of 50cm by 30cm by 20cm and a weight of 450 N, is going to be moved…

A:

Q: A 10 cm conical pointed shaft turns in a stationary conical bearing with an angular velocity of 5…

A:

Q: Two plates are seperated by a distance 1 mm and the gap between the plates is filled with a fluid.…

A: Gap distance, dy= 1 mm= 0.001 m Velocity, du= 1 mm/s= 0.001 m/s Force required by unit area, F/A=…

Q: Problem 2 A 25-mm diameter shaft is pulled through a cylindrical bearing as shown in Fig. 1. The…

A: Solution: Given Data:

Q: Shaft (250 mm diameter) rotates at 250 rpm inside a sleeve (251 mm diameter) with a constant…

A: Given data diameter of shaft (d) = 250 mm  diameter of sleeve (D) = 251 mm Power required = 2204 W N…

Q: A shaft 70.0 mm in diameter is being pushed at speed of 0.4 m/s through a bearing sleeve 70.2 mm in…

A:

Q: Q2) 25-mm diameter shaft is pulled through a cylindrical bearing as shown in Fig.2. The lubricant…

A:

Q: A hydrodynamic journal bearing is subject to 2000 N load at a rotational speed of 2000 rpm Both…

A:

Q: The shear stress at a point in oil having specific gravity 0.98 is 0.25 N/m? and velocity

A:

Q: Figure 1 shows a layer of oil(8.95 kN/m^3),

A:

Q: Two parallel flat plates are spaced 2 in. apart. One plate is moving at a velocity of 10 ft/min and…

A:

Q: An iron block with dimensions of 0.25x0.25x0.25 m; It slides over an inclined plane with an…

A: V=0.25m×0.25m×0.25mθ=30ot=0.0069mm=6.96×10-6 mμ=7.5mPa s=7.5×10-3  Pa-sρ=7800 kg/m3

Q: A rotating cup viscometer has an inner cylinder diameter of 50.8mm, and the gap between cups is…

A: The answer is provided below.

Q: shear stress in Pascals on the surface of top plate

A: Given data; v=7.4×10-7 m2/sS=0.88ρ=1000×0.88=880KG/m3U=0.5M/Sh=0.5mm=0.0005m

Q: Falling Sphere Viscometer Given:             Inner diameter of cylindrical tube = 0.03 m…

A:

Q: Question 1. The apparatus shown in the figure is used to coat a thin steel plate with oil. Fluid1 is…

A:

Q: A shaft of diameter 74.90mm rotates in a bearing of diameter 75.03mm and of 75mm length. The annular…

A:

Q: 1.A plate of 0.025 mm distant from a fixed plate, moves at 50 cm/s and requires a force of 1.471 Pa…

A: We have to solve  Given data  Force on upper plate=1.471 pa Velocity of upper plate=50 cm/s Change…

Q: 1.A.)A cylindrical shaft of radius 5 cm is rotating at a speed of 50 rad/s in a cylindrical bearing…

A:

Q: If the box has a constant area of (0.2 m“), what is its terminal speed?

A:

Q: A journal of diameter 150 mm runs in a bearing 300 mm long. The lubricant used has a density of 855…

A:

Q: ?What is the shear force that acts on the circumference of the piston (N) Assume the variation in…

A:

Q: Figure 1 shows a layer of oil (8.95 kN/m), the thickness of 0.3 mm, between two parallel flat…

A: Given,  Weight density of the oil , ρg =8.95 KN/m3 Thickness of the oil layer , h = 0.3 mm Velocity…

Q: PROBLEM 1.0 A flat area 1.5x10mm² is pulled with a speed of 0.4m/s relative to another plate located…

A:

Q: (b) An oil with dynamic viscosity of 0.8 Pas and specific gravity of 0.9 is flowing through a…

A:

Q: 5.Determine the power required to run a D- 2N2 cm diameter shaft at N = 8N2 RPM in journals with…

A:

Q: The low viscosity of the oil leads to an increase in the efficiency of the mechanical pump.

A: It is False.

Q: Asap

A:

Q: Figure 1 shows a layer of oil (8.95 kN/m³), the thickness of 0.3 mm, between two parallel flat…

A: Given data:-weight density of oil, ω=8.95kN/m3=8950N/m3⇒density of oil,…

Q: A thick 10 kg plate slides down a flat-inclined surface of 20° to the horizontal plane at a terminal…

A:

Q: A piston has a 6-inch diameter where a 6.008-inch bore vertical tube slides. The piston is 6 in.long…

A:

Q: A steel tape 0.5 mm thick and 20 mm wide is pulled by a force ? through a slit opening 1.5 mm and…

A: Write the given data with suitable variables: μ=0.4v=10 m/s

Q: Dm = a shaft with a diameter of 75mm Dy = 75.150mm in diameter and L = Its viscosity is 0.15 kg /…

A:

Q: The space between two 6-in. long concentric cylinders is filled with glycerin (viscosity = 8.5 X 10³…

A:

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.